Category: OPNsense
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Unable to Access Microsoft Services Behind Hurricane Electric (HE) IPv6 Tunnel
If you are using an Hurricane Electric IPv6 tunnel and have recently been having issues accessing accessing Microsoft web services, the issue may be due to Microsoft and their CDN provider Akamai now strictly enforcing Maximum Transmission Unit (MTU) and Maximum Segment Size (MSS) TCP/IP header size limits. The issue with tunneled IPv4 to IPv6…